#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define rep(i, a, b) for (int i = (a); i <= (b); i++)
#define per(i, a, b) for (int i = (a); i >= (b); i--)
#define endl '\n'
const int N = 2e5 + 5;

int n, m, k;
int a[N];

int main() {
  ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
  int t;
  cin >> t;
  while (t--) {
    cin >> n >> m >> k;
    int l = 1, h = m - 1;
    while (l <= h) {
      int mid = (l + h) >> 1;
      int x = m - m / (mid + 1);
      if (1ll * n * x >= k)
        h = mid - 1;
      else
        l = mid + 1;
    }
    cout << l << endl;
  }
  return 0;
}